/*
 * Tencent is pleased to support the open source community by making BK-JOB蓝鲸智云作业平台 available.
 *
 * Copyright (C) 2021 Tencent.  All rights reserved.
 *
 * BK-JOB蓝鲸智云作业平台 is licensed under the MIT License.
 *
 * License for BK-JOB蓝鲸智云作业平台:
 * --------------------------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

package com.tencent.bk.job.common.web.metrics;

import io.micrometer.core.instrument.Tag;
import io.micrometer.core.instrument.Tags;
import org.springframework.web.method.HandlerMethod;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

/**
 * 默认的自定义Timer指标标签提供者
 */
public class DefaultCustomTimedTagsProvider implements CustomTimedTagsProvider {

    private final List<CustomTimedTagsContributor> contributors;

    public DefaultCustomTimedTagsProvider(
        List<CustomTimedTagsContributor> contributors) {
        this.contributors = contributors;
    }

    @Override
    public Iterable<Tag> getTags(String metricName, HttpServletRequest request, HttpServletResponse response,
                                 HandlerMethod handlerMethod, Throwable exception) {
        CustomTimed customTimedAnnotation = handlerMethod.getMethod().getAnnotation(CustomTimed.class);
        Tags tags = Tags.of(customTimedAnnotation.extraTags());
        for (CustomTimedTagsContributor contributor : this.contributors) {
            if (contributor.supports(metricName)) {
                tags = tags.and(contributor.getTags(metricName, request, response, handlerMethod, exception));
            }
        }
        return tags;
    }
}
